For projects in Jakarta
School and classroom acoustics in Jakarta
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet. Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
- Classroom RT
- A number, set against room volume, achieved mostly at the ceiling.
- Corridor spill
- Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
- Halls and gyms
- Dual use rooms carrying speech, music and sport, where durability decides the product.
- Quote
- From a plan and a section, within 48 hours
01 / Start here
What this is, and what it changes in a Jakarta room
Hard floors, bare walls and long corridors that amplify everything. Children with developing language, and anyone with a hearing difficulty, lose more from a live classroom than adults do, which is why intelligibility is the target rather than quiet.
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
Work reaching us from Jakarta is mostly towers and offices, apartments, hotels, hospitals, schools, studios.
- Noise arrives from outside Traffic and construction reach rooms through glazing and openings long before they come through a wall. Fix the weakest path first.
- The port is in the city Tanjung Priok is close, which keeps the road leg short and the landed cost predictable.
- Concrete towers, live interiors The structure blocks well. The problem is tile, glass and stone inside making the room ring.
- Classroom RT A number, set against room volume, achieved mostly at the ceiling.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for school acoustics are on the main product page. This page covers what that means for a project in Jakarta.
02 / The build-up
The build-up, layer by layer
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Layer 1
PET felt acoustic panels
A rigid non-woven panel pressed from 100% polyester fibre, a large part of it recycled. In Jakarta, split units everywhere, with condensers on balconies and light wells that channel noise straight back into bedrooms.
On a 25 to 50 mm air gap. The same panel on battens. The air gap moves absorption down in frequency at no extra material cost, and is the cheapest improvement available.
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Layer 2
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Jakarta, places of worship, function halls and community buildings are large hard rooms carrying amplified speech and music.
On a cavity. Mounted on battens with an air gap, which is where the low mid performance comes from.
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Layer 3
Acoustic panels
The full absorber range rather than one product: plain PET felt, printed felt, grooved panels and fabric finishes, chosen by how the room is used and how it has to look. In Jakarta, classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
Wall array. Panels placed at first reflection points rather than spread evenly. Fewer panels, better result.
If you are specifying for a Jakarta project, we can give you a section, a BOQ and the honest limits of each layer. See how we support architects.
03 / On the ground
What the buildings in Jakarta do to the specification
- Noise arrives from outside
Traffic and construction reach rooms through glazing and openings long before they come through a wall. Fix the weakest path first.
- The port is in the city
Tanjung Priok is close, which keeps the road leg short and the landed cost predictable.
- Concrete towers, live interiors
The structure blocks well. The problem is tile, glass and stone inside making the room ring.
- Standby generation
Power backup sits close to occupied space in most commercial buildings and runs often enough to matter.
- Assembly and performance rooms
Places of worship, function halls and community buildings are large hard rooms carrying amplified speech and music.
- School and campus buildings
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility.
04 / Room by room
Space by space, for Jakarta briefs
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Classroom RT
A number, set against room volume, achieved mostly at the ceiling. Traffic and construction reach rooms through glazing and openings long before they come through a wall. Fix the weakest path first.
- PET felt acoustic panels, 100% PET non-woven, no added binder
- Ceiling baffles and clouds, 9 to 24 mm
- Acoustic panels, Cut pattern in PET felt, adds visual rhythm without changing the absorber
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Corridor spill
Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once. Tanjung Priok is close, which keeps the road leg short and the landed cost predictable.
- PET felt acoustic panels, 9, 12, 18 and 24 mm standard, tolerance plus or minus 5 percent
- Ceiling baffles and clouds, Made to the drawing, standard and custom
- Acoustic panels, ASTM C423
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Halls and gyms
Dual use rooms carrying speech, music and sport, where durability decides the product. The structure blocks well. The problem is tile, glass and stone inside making the room ring.
- PET felt acoustic panels, 4 to 24 mm
- Ceiling baffles and clouds, Both faces work, which is why suspended area outperforms the same area laid flat
- Acoustic panels, 9 to 24 mm, 1220 x 2440 mm standard, up to 2440 x 4270 mm, 1200 to 3600 GSM
Interior designers tend to arrive with the look already decided. We will tell you which finish gets there without losing the acoustics. See how we work with interior designers.
04 / Conditions
Durability in Jakarta, before acoustics is discussed
Jakarta is warm and humid through most of the year, with a long wet season, and that narrows the material list before acoustics is discussed.
Humidity is the deciding factor. PET felt does not absorb moisture, shed fibre or feed mould, which is why it outlasts fabric-wrapped mineral wool in this climate. Wood wool and timber need a ventilated cavity behind them.
The failure we design against here is mould, sagging fabric finishes and swelling in timber.
If a consultant has set the target, we will quote against their figures rather than ours, and stay out of the scope they own. More on working with acoustic consultants.
06 / Straight talk
Where this kind of project usually fails
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Panels at child height where they get damaged
It sounds like a small detail until the room is finished and the complaint arrives.
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Treating one classroom and leaving the corridor
This is the one that comes back as a second fit-out rather than a snag.
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Choosing a product that cannot take a football
Plant noise treated as a room problem is the most reliable way to spend a budget and change nothing anyone can hear.
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Treating it as a generic Jakarta job
Traffic and construction reach rooms through glazing and openings long before they come through a wall. Fix the weakest path first.
05 / Route to site
What the route into Jakarta actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Tanjung Priok, then a short road run into the city |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Tanjung Priok |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
Sea freight into Tanjung Priok, then a short road run into the city. Air freight for samples and urgent quantities.
Questions from Jakarta projects
What makes school and classroom acoustics different in Jakarta?
Classrooms are hard, naturally ventilated and open to corridor and street noise, so absorption alone will not fix intelligibility. Traffic and construction reach rooms through glazing and openings long before they come through a wall. Fix the weakest path first.
Where should the budget go first on a Jakarta project?
Classroom RT. A number, set against room volume, achieved mostly at the ceiling. Corridor spill. Long hard circulation feeds every room off it. Treating the corridor helps every classroom at once.
Do you have an office or installation team in Jakarta?
No. We manufacture in India and supply into Jakarta. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a Jakarta site?
ships from: Palwal, Haryana, India, arrives at: Tanjung Priok, then a short road run into the city, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
What goes wrong most often on this kind of project?
Panels at child height where they get damaged. Treating one classroom and leaving the corridor.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Send the drawings, get a straight answer
A plan and a section is enough. We will come back with a build-up, a BOQ and a delivered date, and we will say so if what you are asking for will not work.